Q24S30020 DC-DC Converter Data Sheet
18-36 VDC Input, 2.0 VDC @ 30 A Output
Description
The Q24S30020 surface mounted DC-DC converter offers
unprecedented performance in the industry-standard quarter
brick format. This is accomplished through the use of patent
pending circuit and packaging techniques to achieve
ultra-high efficiency, excellent thermal performance and a
very low body profile.
In telecommunications applications theQFamily 30 A
converters provide thermal performance that far exceeds all
quarter bricks and is comparable even to existing half-bricks.
Low body profile and the preclusion of heat sinks minimize
airflow shadowing, thus enhancing cooling for downstream
devices. The use of 100% surface-mount technologies for
assembly, coupled with advanced electric and thermal
circuitry and packaging, results in a product with extremely
high quality and reliability.
Features
RoHS lead-free solder and lead-solder-exempted
products are available
Delivers up to 30 A
35
30
25
20
Higher current capability at 70 ºC than existing quarter
brick and 30 A half-brick converters
High efficiency: 84.5% @ 30 A, 86.5% @ 15 A
Start-up into pre-biased output
No minimum load required
No heat sink required
Low profile: 0.26” [6.6 mm]
Light weight: 1 oz [28 g] typical
Industry-standard footprint: 1.45” x 2.30”
Meets Basic Insulation Requirements of EN60950
On-board LC input filter
Fixed-frequency operation
Fully protected
Remote output sense
Output voltage trim range: +10%/-20%
Trim resistor via industry-standard equations
High reliability: MTBF 2.6 million hours, calculated per
Telcordia TR-332, Method I Case 1
Positive or negative logic ON/OFF option
UL 60950 recognized in U.S. & Canada, and DEMKO
certified per IEC/EN 60950
500 LFM (2.5 m/s)
15
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
10
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
5
0
20
30
40
50
60
70
80
90
Ambient Temperature [°C]
Fig. 1: Available load current vs. ambient air temperature and
airflow rates for Q24S30020 converter mounted vertically with air
flowing from pin 3 to pin 1, MOSFET temperature 120 C, Vin =
27 V.
Applications
Meets conducted emissions requirements of FCC
Class B and EN55022 Class B with external filter
All materials meet UL94, V-0 flammability rating
Telecommunications
Data communications
Wireless
Servers
MCD10218 Rev. 1.0, 23-Aug-10
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